Sewing-machine.



W. L. PIERCE.

SEWING Mmmm.

APPLICATION flLED MR.25. l9l4.

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SEWXNG MACHINE.

APPLICATION FILED APR.25. |914.

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W. L. PIERCE.

SEWING MACHINE.

APPLlcATloN msu Amzs. |914.

Patented Sept. 10, 1918.

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W. L. PIERCE.

SEWING MACHINE.

APPLICATION man APR.25.19|4.

Patented sept. 10,1918.

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SEWING MACHINE.

APPLICATION FILED APR.25. I9I4.

1,278,204. Patented sept. 10,1918.

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UNITED sTATEs PATENT oEEIoE.

WILLIAM L. PIERCE, or NEW YORK, N. Y., AssI'GNoE. 0E ONE-reuniera' To WILLIAM J.

BELL, KINGS COUNTY, NEW YORK.

SEWING-MACHINE. f

Application filed April 25, 1914. Serial No. 834,291.

To all whom t may concern:

Be it known that I, VILLIAM L. PIERCE,

acitizen of the United States,residing at theborough of Manhattan, in the countybf New York and State of New York, have 1nvented certain new and useful Improve- 'Y ments in Sewing-Machines,0f which the following is a specification, reference Abeing had therein to the accompanying drawing.

My invention relates to improvements in sewing machines,and more particularly has reference to what is generally understoodas a blind-stitching.machine 1 Referring tothe accompanying drawings, Figure 1 is the'head of a sewing machine in sideVV elevation, partly in cross section and partly broken away, illustrating one application of my. invention. Fig. 2 is a cross section on the line 2 2 of Fig. 1. Fig. 3 is a cross ysectional end view on the line 3 3 of Fig. l, and Fig. 4 is an end view looking from right to left at Fig. .1. Fig. 5 illustrates a sample of the sewing on 'a piece of goods, Fig. .6 is a cross section of the same on an enlarged scale, and Figs. 7, 8, 9 and 1()` illustrate modifications.

Referring now more-particularly to Figs. 1 and 2, 7 is the driving shaft carrying the usual hand wheel 8 and belt and pulley 9 and 10 respectively. Upon this shaft itwill be observed is mounted a pinion 11 which meshes with the pinionsv 12 and 13 upon the 1, shafts. 14 and 15 respectively. The shaft 14 it will be observed is provided with aneccentric 16 which carries the lever l17 pivoted to the lever 18 as shown and which is mounted upon the bearing 19y and is resiliently retained by suitable means such as the spring 20, said lever having mounted at its outward extremity a suitable sliding, lifting member or bender 21 provided with the chain 22, so that upon each two revolutions of the driving shaft 7, itwill be observed the lifting member 21 is raised once upon thebearing 19 against the action of the spring 20.

The driving shaft 7, it will be observed, also carries a pinion 23 which meshes with the pinion 24 uponthe shaft 25, carrying the hook 26,4 which hookv it will be observed makes four revolutions with each movement carrying. the connecting rod 28 pivotally connected to the needle bar 29, at the opposite extremity vof which is mounted thencedle 30 by means of the bracket 31', andfrom which it will be seen, lookingat Fig.v l, that the-needle reciprocates horizontally while the lifting member 21 is moving.`

The feeding wheels 32-32` are .securely- V mounted upon the shaft 33 which it will be observed passes Ythrough the U-shaped support 34 which in turn it will be observed on looking at F ig; 3, engages the ,eccentricV rod 35., by means ofthe pin 36 which it lwill be i seen projects into theV recess 37 ofthe U- shaped member. 38 and '39 areV ratchet wheels securely mounted upon the shaft 33',

j and 40 and 41 are pawls secured upon the e'ccentric rods 357-35.V These eccentric rods are mounted upon eccentrics 42 and 43V which in turn are secured to the driving shaft 7 so that the eccentric rods 35-351, it will be observed, are vertically reciprocated as the drivingshaft 7 -is rotated', vand from this it will also be seen that the pawl 40 will engage the ratchet wheel 38 upon each return stroke of the Veccentric rod 35 thereby intermittently rotating the shaft 33 and its feeder wheels 3232.

For the purpose of reversing theV feed itwill be seen that v upon pulling*downwardly upon the chain 44 attached to the rod 45 projecting from. the. U-shapedv member 34, the same is drawn downwardly; against the action of the spring 46, .and the pin 36 is thereby forced leftwardly with its :eccentric rod 35, thereby disengaging the pawl 40 from ,the ratchet wheel 3S while at the same time served that the shaft54 carries the pinion 55 which meshes with the pinion 56 upon the shaft 15, provided with the gear 13,.so that by now referring to Fig. 4, it will be observed that upon eachV rotationvofl the shaft 54 the vcam 55 mounted on the end thereof servesto oscillate the bracket 56 carrying the presser plate 57, theother end of Which is secured upon the bracket-58,V and it will also be observed that the movement of the presser plate 5T is simultaneous with and in opposite direction to the m vement of the lifting member 2l. The presser plate it will also be observed is pio.'ided with a suitable tongue or throat G0 indicates a bridge located between the hooir 2G and the presser plate 57.

A ln operation, rthe goods introduced between the presser plate 5T and wheel feed Sl and the 'l raised the bender 2l through the pref er plate into position so that the needle l ,L through the goods as indicated in Fig. t5 by the reference character Gl. This carries the thread of the needle through Yhe goods and the saine is engaged by the hook in the head and locked with the other thread in the usual manner. The appearance of the exposed stitching is indicated to bette advantage in Fig. 5 which is a view looking downwardly at. G.

lt will be observed on reference to VFig. l that the shaft is mounted in the adjust able bearing GQ which is resiliently projected upwardly by the coil spring G3. The. screw Gl pas, through the casing so as to depress the bearing of the lever 1S against the action of the spring 20 thereby lowering the bender or lifting member for the purpose of adj usting the position of the work. lt will also be observed that by pulling down upon the chain 22, the bender or lifting member as well as the feeding wheels can be dropped so as to sutliciently clear the foot or plate 57.

Referring now to Figs. 7 and 8 it will be observed that in this modification indicates a needle guide mounted upon the shaft 7l which is so connected to the transmission that as the shaft 71 is oscillated, the guide moves away from the needle on the return stroke of the needle before the eye of the needle reaches the edge thus preventing the edge of the guide from cutting the thread. rPhe plate T2 is preferably cut away at T3 to allow the goods to be pushed through by the bender 2l thus bringing the same properly within the path of the needle. From this it will be seen that the Plate 5T and the guide 70 move independently.

Referring now to Figs. 9 and 10 it will be observed that in this modification the feed shaft Si) provided with a concentric outer shaft 33 said shafts being provided with the pinions 3S and 39 respectively. Upon the opposite end ofthe shaft 33 is provided the gear 'T3 and upon the same end of the hollow shaft the gear Td. These gears mesh with the sin-aller gears T5 and 76 respectively upon the shaft T7 which also earries the feed wheels 7S and '79 mounted oppositely as shown, suitable provision being made for the bender 21 to pass between. Thus it. will be seen that when the U-shaped member is operated either of the feeds 75 or 7G may be thrown into action and the direct or reverse action of the feed readily controlled.

Of course it will be understood that various modifications may be made without departing from the spirit of the invention as claimed.

l claim:

l. In a sewing machine, a drive shaft, a hook shaft carried at right angles to said drive shaft. both of said shafts being located in the same plane, a presser foot, a throat plate in combination therewith, a feeding wheel, a needle, and a bender, said foot being located above said wheel, needle and bender, and means in combination with said foot to allow said bender to elevate the material to be operated upon above the path of said needle means for intermittently operating said foot.

ln a sewing machine, a drive shaft, a hook shaft at right angles to said drive shaft, both of said shafts being located in the same plane, a presser foot, a throat plate in combination therewith, a feeding wheel, a needle, and a bender, said foot being located above said wheel, needle and bender, and means in combination with said foot to allow said bender to elevate the material to be operi 'ted upon above the path of said needle, said foot being hinged at the left side thereof and an eccentric atl the right side of said foot adapted to operate the saine once for each double operation of said needle.

ln a sewing machine, a drive shaft, a hook shaft at right angles to said drive shaft, both of said shafts being located in the same plane, a presser foot, a throat plate in combination. therewith, a feeding wheel, a needle, and a bender, said foot being located above said wheel, needle and bender, and means in combination with said foot to al,- low said bender to elevate the material to be ope ated upon above the path of said needle, said foot beingl hinged at the left side thereof and an eccentric at the right side of said footl adapted to operate the same once for each double operation of said needle, a ratchet driving device cooperating with said foot, and means for reversing the action of said ratchet driving device.

el. ln a` sewing machine, a drive shaft, a hool; shaft disposed at right angles to said drive shaft, both of said shafts being located in the same plane, a presser foot, a throat plate in combination therewith, a feeding wheel, a needle and a bender, said foot being located above said wheel, needle and bender, and means in combination. with said foot to allow said bender to elevatey the material to be operated upon above the path of said needle, said foot being hinged at one side thereof and an eccentric at the other side of said foot adapted to operate the same once for each double operation of said needle, a ratchet driving device and bender, means in combination with said foot means for reversing the action of the same. to allow said bender to elevate the material 15 means for moving said bender independently to be operated u-pon above the path of said or in combination with said wheel, and a needle, and a movable needle guide adapted movable needle guide adapted to move to or to move to or from the under side of said from the under side of said needle. needle.

5. In a sewing machine, a drive shaft, a In testimony whereof I hereunto affix my 2o look shafft, displosdfat l15j/,gilt angles to said signature in the presence of two witnesses.

rive sha t sai sia ts ein located in the same plane, a pressure fooand a throat WILLIAM L' PIERCE' plate in combination therewith, a feeding Witnesses: wheel, a. needle, and a bender, said foot be- LOUISE ENDERLE, ing located above said wheel, needle and THOMAS A. HILL.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C. 

